Heading and slotting machine.



C. GLOVER 5: H. K. JONES.

HEADING AND SLOTTING MACHINE.

APPLICATION FILED DEC. 20, 1910.

Patented Apr. 25, 1911.-

5 SHEETS-SHEBT 1.

Q/vi [Me 0325 C. GLOVER & H. K. JONES. HEADING AND SLOTTING MACHINE.

I APPLICATION FILED PEG. 20, 1910. 990,544 Patented Apr. 25, 1911.

5 SHEETSSHEET'2.

62/19/74 [J 62 ova? Q Vibweooeo: I C/0/Vf 6 5140c Mow G. GLOVER & H. K. JONES.

HEADING AND SLOTTING MACHINE.

APPLIOATION FILED DEC. 20, 1910.

990,544. I Patented Apr. 25, 1911.

5 SHEETSSHEET a.

619/741 0 fiz. OVEIT 3] WW Mow c/bmfa wi-lue was:

c. GLOVBR & H. K. JONES.

I HEADING AND SLOTTING MACHINE.

APPLICATION FILED DBO. 20, 1910. 990,544, Patented Apr. 25, 1911.

5 SHBETSSHBBT 4.

G. GLOVER & H. K. JONES. READING AND SLOTTING MACHINE. APPLICATION FILED DBO. 20, 1910.

990,544. Patented Apr.25, 1911.

6 SHEETS-SHEET 5.

i HoRAon K..Joi-1ns, citizens of the United States, residing at New Britain and Hart ford, county of Hartford, State of Connecticut, respectively, haveinvented certain new and useful Improvements in Heading and Slotting Machines, of which the following is a full,.clear, and eXactde scription.-,

Our invention relates to an improved combined heading and slot cutting machine, the same being particularly valuable in the manufacture of screws and the like. I

The object of the invention is to provide a machine to form and slot screwheads in an effective and expeditious manner.

In theaccompanying drawings, Figure 1. is a plan view of the improved machine. Fig. 2 is a similar view partly in section, certain parts being removed.- Fig 3 is a vertical section on the line aam-Fig.;1. 4: is} a relatively enlarged sectional View of certain parts, on the plane of the line.. 1 1

Fig. 1. Figs. 5 to 16 inclusive are detail views. H y

In general the machine, as to its main parts and the method of operating the same, is similar to the machine shown and described in the U. S Letters Patent to K. Jones, numbered 57 1,6309," dated January 5th, 1897, to which reference is made for a, further detailed description than contained herein, as to such parts as are in common to the two machines.

Preparatory to describingthe machine,

we will briefly point out what our present aim is, and in a general way, the'means by which our improved results are attained.

The object of the present machine is to rapidly and uniformly form, slot and finish a head, for example, a screw head, in such a manner that the product possesses superior advantages. The machine in general, in its preferred form, is of the type commonly termed' a three-blow header and the slotting appliance is so timed as.

to perform its function prior to the finishing blow. It is of the utmost importance, to secure uniform and eifective results, that the slots in the heads be formed diametrically across each screw head. As will later be seen, our construction is such that the slot always occurs strictly on the diameter of the screw head, and the sidewalls and edges of the slot may also be specially '3 Specif cation of LettersPatent.

' dnanrnscroviin, OFL',=1\TEW'-IBRITAIN AND HORACE K. muss or HARTFORD,

-. v CONNECTICUT.

'nnanme .AND 510mm Macmnn. f a

- Patented'ikpr. 25, 191i.

j AppIic'atio n fiie d December 20,1910, Serial No. 598,422.

,formed so, as tofmost'efi'ectively receive a ff; e, 1t known that ,we, GHAR Es GLOVER the SlOtSbfill'lg an moi entto the manipulascrewdriver, this im roved formation of tion of, the metal. I The frame 1 of the machine may be of any suitable sufficiently powerful construction. p, v

2 is a drivingshaft mounted in the frame and. rotated from any suitable source of power.

3 represents a pitman mounted e ccentri cally on the driving shaft 2 and "connected with a longitudinally reciprocating ram},

At the forward end of the ram is carried a transversely movable head-block, or punch-- holder, 5, upon the face of which is mounted the punches 6, 7 and 8,'the faces of these punches being appropriately shaped so as to form, together with dies, by successive blows lmparted to the end of a piece of wire,

.the desired shape of a head, the final punch giving what we havetermed the finishing blow. Suitable means may be provided to cause the punch-holder 5 to shift between each stroke in such a manner as to bring into proper position each of the punches successively.

9 represents the die-holder, or head, through which there is a passage for" the wire, or blank, upon which the head is to,

be formed. Suitable means, for example,

such as is shown in the former patent referred to, may be provided for intermittently feeding the wire blank into position to receive the heading and finishing blows. The die-holder is constructed to hold suit able die members 1011, which are so arranged that when brought together the wire is properly gripped and centered, said dies having countersunk portions into which the upset metal is forced during the heading process. As soon as one head is finished, the blank upon which said head is formed 7 is kicked out, or discharged, and another blank instantly takes its place ready to receive the successive blows.

Thus far described, and in a general way, the various elements of the machine may*be of any well-known construction, for ex ample, of the construction described in the above referred to patent.

The present invention comprehends' the provision of slot-forming mechanism whereby accurate and uniformly located slots may be formed in each head between the successive blows of the, punches, and particularly whereby a imparting to it its proper shape.

in an interval just preceding" the final blow,

duced, there ysaving further labor an pense. In the present instance, we have shown two referred forms of slotting devices, both having a reciprocal movement traversing diametricall the face of the screw head, one of sai devicesbeing of a plain single, or multiple, toothed router, the other being in the form of a circular saw, the carrier for which has a reciprocal movement across the face of the screw head. We will first describe a cutter of the router type.

12 re resents a reciprocating cutter-carrier, w ich, in this instance, reciprocates' transversely of the machine and is so timed with the machine that its reciprocal movement occurs between the successive reciprocations of the headin punches. As shown in Figs. 1, 2, 3 and 4, t is reciprocating member 12 is mounted in a suitable guideway-13 on the frame 1.

14 'is a lever pivoted at 15, suitably connected at one end of the cutter-carrier 12, and at the other end with a cam 16, the latter being driven by the shaft 2 and so formed asto give a powerful, quick and timely movement to the cutter-carrier above described. The cutter carrier carries a cutter which is so located, and travels in such a path, as to traverse the face of the screw head at its greatest diameter and cut, or rout out, the desired slot therein. In Figs. 5 and 6 We have shown a single toothed router 17, whereas in Figs. 15 and 16 we have shown a' multiple toothed router, or saw, 18 either of which may be employed as judgment requires in each particular case.

19 represents a transverse clearance space,

or guide-groove extendin transversely through the face of the die e ements 10 11, through which clearance space these' slot cutters may travel.

In Figs. 1 2 to 14 we have shown a cuttercarrier 12 which is suitably constructed to carry arotary cutter 20 of the circular saw type which is caused to move across the face of the screw head in the same manner as the cutters previously described, said saw being rotated in any suitable manner, as by a flexible shaft 21 which may be employed with and driven by any suitable means, for example, the driving shaft 2.

The operation of the machine is' substantially as follows: The wire blank is fed in and gripped between the die members 10- 11. The heading punches 67 upset the end of the wire blank by successive blows Next, the slot is formed across the diameter of theface of the head, and finally, the third punch 8 strikes the now slotted head a blow, giving to it its finished appearance. If, during the slotting operation a bur is formed at each roperly finished head ro-' edge of the slot which stands slightly above. the surface of the face of the'scr'ew head,

the finishthis bur will be drivendown b ing blow imparted by the punc 8, as indi- 'cated respectlvel in Figs. 9 and 10. .If desired, the face 0 the finishing punch '8 may have a diametrical rib or pro ection 8, as

shown in Fig. 11. Insome cases,dparticularly with heavy screws, it may be sirable to provide this rib 8', inasmuch as it serves as an abutment to receive that part of the metal forced inwardly, or toward, the mid die of the slot .on the finished operation;

stances, indeed, to the extent of forming at once, and solely by the finishing blow, a slot, which, in cross section may be of the well-known dovetailed type. Where he tofore it has required two obliquely arra ed saws, or some special means for foru 'ng slots of this ty e, in the present instance such a slot may formed as an incident to the regular 0 eration'of the machine. It will be seen t at a number ofadvantages flow from performing the slotting operatlon in the interval between the o eration of one. of the forming punches an the finishin punch, the machme being so designed an constructed that this slotting operation may occur so rapidly as to not interrupt the uniform timing of the successive blows of the punches. In the same manner a new and unheaded blank may likewise be inserted be tween the finishing blow of the punch 8 and the starting blow of the punch 6. I

The usual adjustment, or, indeed, any suitable adjustment may be'employed in the machine for the various operative parts, but

gno description of any particular form of adjustment is, required in the present case since nov claim thereto will be made herein.v

So likewise any suitablemeans may be pro.-

vided, for example, such as, shown in the former patent referred to, for opening the die members 10-11 when one blank is headed, slotted and finished ready for discharge, appropriate means being employed to bring said die members together again when a new blank has been introduced.

In a machine of the preferred construction referred to herein, the interval of time between each series of three strokes effected by the three punches is the same, and so likewise is the interval of time between the blow' of the finishing punch and the first of terval, the slotting the head, and during another interval, the discharge of the fin ished blank and the introduction of. an unfinishedblank ready for heading.

, means for 'shifting the punch carrier f may, correspond r to thatshown in the "former patent above referred to, and may comprise the cams 3236 operating respectively'upon the levers 3837. When both levers 33-'37 are in their lowermost position, the carrier 5 is in its lowermost position, presenting the punch 6 in line with the blank upon which the head is to be formed. When the lever 37 is operated by the cam 36,

it swings to a sufiicientdegree to raise the carrier 5 to the position shown in Fig. 3,

presenting the punch 7 in line with the blank which then has a partially formed head thereon. When the lever' 83 is engaged by the cam 32, it lifts the carrier 5 another step, presenting the finishing punch S to the blank. Following this, both cams retire and the carrier 5 settles to its original position. Obviously the'cams 3236 are driven by the shaft 2 and in proper time to cause the shifting of the punches successively to the appropriate position. So likewise the means for opening and closing the blank holding dies may correspond to that shown in said former patent, the means for opening said dies comprising a sliding rod 55 pressed by spring 56, the means for 010s ing said dies comprising the rollers 6061 mounted in a sliding block 62. The movement to and fro of the sliding block 62 causes the rollers 60 to operate against the cam-shaped ends 59 of a slide 57, the latter being suitably connected with the movable element of the die to force it closed at the proper moment. In this case likewise the slide block 62 should have its movement feeding the Blanks may be similar to that set forth in said former patent, 72 conventionally representing the feed roller element of said feeding mechanism, which latter is appropriately connected with the driving shaft so that the-proper feeding of the blanks will occur in synchronism with the correlated parts of the machine.

Broadly speaking, our invention comprehends the use of a transversely movable slot forming device regardless of the actual number of punches employed, which number may be varied as desired, it being understood that more than one punch is preferred in most instances.

While we have described our invention as applied to a header of the so-called open that said intervals of time are sufiicient to tpermit, during one in &

die type in which the die is composed of two members, one of which at least is movable, it may be applied to a header of the vsolid die type, one example of which is found in H. K. Joness former Patent No. 590,576, dated September 28th, 1897. What we claim is:

- 1. In a headingand .slotting machine, a

die, aheading punch and a finishing punch,

a shiftable carrier for said punches, means for shifting and reciprocating said carrier and punches,'a slot cutter and means for moving said slot cutter to and fro trans- -versely across the center of said die in the interval preceding the operationof the finishing punch.

2. In a heading machine, a die for holding a blank, three punches, a shiftablecarrier therefor to permit said punches to be presented successively in line with a blank held by said die, means-for moving said punch carrier to cause said three punches to act successively on the end of said blank, a slot cutter arranged to be reciprocated to and fro transversely across the center of said die, and means to cause said reciprocal movement of said cutter to occur in the interval between the operation of the second and third punches on said blank.

3. In a headingmachine, a blank holder, a plurality of heading devices arranged to successively act upon the end of a blank carried by said blank holder with means for forming a slot in the end of the blank in an interval subsequent to the action of one of said devices, and prior to the action thereon of the final device.

4. In a heading machine, a blank-holder, a plurality of heading devices arranged to successively act upon the end of a blank carried by said blank-holder, with means for broaching transversely a slot across the end of the blank in an interval prior to the action thereon of the final heading device, and means to move said devices successively in front of said blank and also to and fro at uniform intervals of time.

5. In a heading machine, means arranged to grip a blank, a plurality of reciprocating heading devices arranged to successively upset the end of a blank carried by the die, means to form a slot inthe headed end of the blank'subsequent to the action of the first heading device and prior to the action of the last device.

6. In a heading machine, means for feeding and gripping a blank including a die, means for heading the end of the blank including a plurality of punches, means for operating the punches to cause said blank to be struck successively by the same, said means including a reciprocating head and a relatively transversely movable punch carrier, means for slotting the end of the blank while the same is being held, said means ineluding a cutter and a movable carrier therefor, means-for operating the blank grlpplng device in the interval prior to the forward movement of the first ofthe punches, and means for operating said cutter carrier in the interval just preceding the forward means including areciprocating head and a relatively transversely movable punch carrier, means for slotting the end of the blank while the same is being held, said means including a cutter and a reciprocating carrier therefor. means for operating the blank forward movementof the carrier in the, interval just preceding the forward movement of the lastof said punches, the interval of time between theaction of said punches being substantially uniform.

S. In a heading machine, a the for holda slotin the end of a blank carried thereby in the interval between the successive operations of said punches, said cutter comprising a rotatable toothed element with means for rotating the same.

t). A heading and slotting machine having a feeding device, aheading die and a heading punch, with mechanism for feeding the stock to the heading die, mechanism for forming a head upon the stock by a blow from the punch while the stock lS'lll the I heading die, a slot cutter and mechanism for E moving said slot cutter across the head, after gripping device in the interval prior to the first of the 5 punches, and means for operating said cutter the blow from the punch, while the headed blank is held 111 the die, and thereby cutting a slot in the head.

CHARLES GLOVER. HORACE K. JONES.

\Vitnesses GEO. I. SPEAK, E. E. Mouse. 

